<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Thymeleaf </title>
</head>
<body>
<p th:fragment="thCommon">
    <span>定义代码块： th:fragment</span>
</p>
<p id="idCommon">
    <span>ID Selector Common</span>
</p>
</body>
</html>